Oiling device for bearings



July 11, 1950 H. HORNSCHUCH OILING DEVICE FOR BEARINGS Filed Oct. 23, 1947 INVENTOR HANNS HORNS CHUOH- BY HIS ATTORNEY Patented July 11, 1950 "UNITED STATES PATENT OFFICE OILING DEVICE FORBEARINGS 'lHanns Hornschuch, Easton, Pa., assignor to Ingersoll-Rand Company, New York, N. Y., a cor poration of New Jersey Application October 23, 1947, Serial No. 781,719 (01.184-6) Q 3 Claims.

This invention relatesato oiling devices, and more particularly to anloiling device for bearings of the thrust type.

- Oneobject of the invention is to'reduce to a minimum the number of exposed conduitsyand joints required for supplying the oil to the bearmgs.

A further object is to prevent the splattering of oil over objects in the vicinity of the machine towhich the oiling device is applied in the event of'failureof the oil conveying means and their joints.

Other objects will be in part obvious and in part pointedout hereinafter.

In the'drawings accompanying this specification and in which similar reference numerals refer to similar parts,

Figure). is a side elevation, partly broken away, of an oiling device constructed in accordance with the practice of the invention and a pump to which the oiling device is applied,

Figure 2 is a transverse view taken through Figure 1 on the line 2-2, and

Figures 3 and 4 are similar views taken through Figure 2 on the lines 3-3 and 44, respectively.

Referring more particularly to the drawings, 20 designates, in general, an oiling device constructed in accordance with the practice of the invention and 2| a centrifugal pump having a shaft '22 and bearings 23 and 24 therefor to which the olling device 20 supplied oil under pressure for lubricating them.

On the shaft 22 is a sleeve 25 that carries a thrust collar 2-5 and seats at one end against a shoulder 21 on the shaft. The sleeve may be secured against rotation with respect to the shaft in any well known manner and is pressed against the shoulder 2'! by a nut 28. Within the blocks 29 supporting the shaft 22 are thrust shoes 30 to engage, at their inner surfaces 3|, the end surfaces of the flange 26. The outer surfaces 32 of the shoes 30 are of spherical shape and seat against correspondingly shaped surfaces 33 on the blocks 29 to enable said thrust shoes to adjust themselves readily with respect to the flange 26 and the blocks 29. The blocks 29 have external flanges 34 the peripheral surfaces 35 of which are of spherical shape and seat upon simi larly shaped surfaces '36 of webs 31 within the casing or bearing housing 38 housing the hearing 23.

The opposed inner surfaces of the webs 3'! are recessed to form an annular groove 39 that encircles the fianges 34 and communicates with an annular groove 40 within the blocks 29 through an aperture4l in the top portion of the upper block 29. Theannular groove 40 encircles the thrust collar 26 and the thrust shoes 30 so that the cooperating surfaces of these parts will be immersed in oil both-when the pump is in operation and idle. The groove 45 will at all times be full of oil so that an ample. supply'thereof will be available for lubricating the thrust surfaces at the beginning of each starting period of the pump. The oil entering the annular groove 40, in excess of that required for filling said groove will pass from the upper part thereof 'into the casing or housing 38 through a channel 42in the upper block 29. p

The oiling device 20, constructed in accordance with the practice of the invention, is arranged adjacent the bearing 23. It comprises a pump 43, of the gear type, that is attached to the lower end of a distance piece or pump casing 44 depending from and securedto the casing or housing 38 by bolts 45. The'pump 43 is driven by the shaft '22, its driving gear 46 being keyed to a vertical shaft 4'! that has a pinion 48 meshing with a gear 49 on the shaft 22.

The pump 43 is held suspended in the intermediate portion of a reservoir 58 by the distance piece 44 and its suction pipe 55 is preferably of short length to prevent the drawing of sediment from the bottom of the resrvoir into the pump. The discharge conduit 52 for the pump also lies entirely within the reservoir 50 and. is connected to the wall 53 of a compartment 54 containing a filter 55 that filters the oil prior to its delivery to the bearings.

The filter 55 may be of any suitable type and the oil passes therefrom into a passage 56 in a cover plate '51 for the compartment 54. A conduit 58 connected to the cover plate 5'! conveys the oil from the passage 56 to a cooler 59 shown arranged immediately adjacent the side of the reservoir 50 in order that the conduit 58 may be held to a short length. The oil passes from the cooler 59 through a discharge conduit 51} having a branch conduit 61 leading to the bearing 24 and a gauge 62 for indicating the pressure of the oil. The conduit is connected to the reservoir 50 and opens into a conduit 63 connected to a boss 64 on the inner surface of the reservoir at one end and at its other end to the distance piece or pump casing 44 at a point inside of the reservoir 50.

The conduit 53 is provided with a relief valve 65 and opens into a cavity 66 in the distance piece containing the shaft 47. A passage 61 in the distance piece and in the casing 38 conveys the oil distance piece 44, opening into the upper por- 5 tion of the reservoir 50.

The opening 69 in the reservoir wherein the distance piece or pumpficasing Miies- -and. through" which the-pump 43 is placed into the reservoiris defined by an annular flange l0 and is covered 19 by a cover H which has a depending flange 12 that encircles the flange 10 to prevent-the--en-- trance of foreign matter into the reservoir; The cover H and the flange 12 are spacedasuitable f from the casing and extending through the opening for holding the pump suspended in the reservoir and having passages for conveying the oil discharged by the pump to the bearing and for returning such oil to the reservoir, and a cover on the said means for the opening arranged in non-contacting relation with the reservoir to prevent the" transmission of thr ust" from: the casing tothe reservoir.

2. In an oiling device, a casing, a shaft in the casing, a bearing in the casing for the shaft, a

reservoirflfor oil, a pump in the reservoir for pumping oil to the bearing, a distance piece on thecasinglto support the pump having a passage distance from the flange 10'te'prevent-the-app1i=-1 o-con y-fl a ged by he p to the bearcation of thrust from the distance piece to the reservoir whenever the pumpxcontractsor exe, pands.

In practice, the present invention has been found to be highly desirable for use for the pur- 20 poseset forth. By arranging the ='px 1m-p within the reservoirand bonv'eyingthe" oil to and from; the bearing through pas'sageswi thin the distance piece and by arranging the parts in" such wise that most of the? joints of *the conduits conveying the oil may be made within the reservoir: The chances ofsme'ar'ing oil upon the floor and objects in the vicinitynfth'e pump Will be greatly minimized asiwiilalso' be thechances of injuring or breaking the conduits." The; parts comprising the oiling deviceare, moreover; grouped in a more compact arrangement than in devices wherein the conduitsand parts associated therewith lie;

exteriorly of the reservoir. 35

having an opening,'a.p11mp in the reservoir for o,

pumping oil' to the'bearin'g, means depending;

mg and secondpassage for the return flow of such oilto the reservoir, and means in the reservoir to filter the oil flowing from the pump to the first mentioned passage.

3. In an oiling device, a shaft, a bearing for the shatt, a' hGlISiIIg/Lfbl the bearingea resenvoirzfor 01:1 and a pumpl casingrdepending;fromithe bear ing housing into the reservoir and; having-therein.

a pump. .for'. pumping: oi11= fromzthe reservoir: and

5 passagewaysintheicasing wali-iorconveying-such oil to andfromthe bearings;v

HANNS HORNSCHUCI-Ir:

REFERENCES CITED" 1 The 'followingreferences are of record in. the

file of this patent:

UNITED STATES PATENTS;

Number Name Date 1,284,701 Jungr'en Nov--12; 1918 1,607,318 Spiliman Nov."16,' 1926 1,686,839 Rhoads Oct. 9, 1928" 2,124,395 Cailghey J1'11y519, 193.8 2,355,217 Hamann Aug.'8, 1944'. 

